<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>登陆验证-非常重要</title>
		<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
		<script>
			function checkUname(){
				//用户输入的
				username = $("#uname").val();
                //验证规则(正则表达式)
                reg = /^[a-zA-Z0-9]{3,10}$/;
                if(!reg.test(username)){
                	$("#uname").css("border-color","red")
                	return false;
                }else{
                	$("#uname").css("border-color","")
                	return true;
                }
			}
			function checkUpsw(){
				//用户输入的
				psw = $("#upsw").val();
                //验证规则(正则表达式)
                reg = /^[0-9]{6}$/;
                if(!reg.test(psw)){
                	$("#upsw").css("border-color","red")
                	return false;
                }else{
                	$("#upsw").css("border-color","")
                	return true;
                }
			}
				function checkAll(){
				checkUname();
				checkUpsw();
			}
		</script>
	</head>
	<body>
		<h2>用户名是字母数字的组合，3-10个；密码6个数字</h2>
		用户名<input onblur="checkUname()" type="text" id="uname" />
		密码<input onblur="checkUpsw()" type="password" id="upsw" />
		<button onclick="checkAll()">登录</button>
	</body>
</html>
